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// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/cc_export.h"
#include "cc/trees/render_frame_metadata.h"
namespace viz {
class CompositorFrameMetadata;
namespace cc {
// Observes RenderFrameMetadata associated with the submission of a frame.
// LayerTreeHostImpl will create the metadata when submitting a CompositorFrame.
// Calls to this will be done from the compositor thread.
class CC_EXPORT RenderFrameMetadataObserver {
RenderFrameMetadataObserver() = default;
RenderFrameMetadataObserver(const RenderFrameMetadataObserver&) = delete;
virtual ~RenderFrameMetadataObserver() = default;
RenderFrameMetadataObserver& operator=(const RenderFrameMetadataObserver&) =
// Binds on the current thread. This should only be called from the compositor
// thread.
virtual void BindToCurrentThread() = 0;
// Notification of the RendarFrameMetadata for the frame being submitted to
// the display compositor.
virtual void OnRenderFrameSubmission(
const RenderFrameMetadata& render_frame_metadata,
viz::CompositorFrameMetadata* compositor_frame_metadata,
bool force_send) = 0;
} // namespace cc